import axios from 'axios';
import { Notification, MessageBox, Message } from 'element-ui';
import store from '@/store';
import { getToken } from '@/utils/auth';
import errorCode from '@/utils/errorCode';

// 是否显示重新登录
export let isRelogin = { show: false };
axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8';
// 创建axios实例
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: process.env.VUE_APP_BASE_API,
  // 超时
  timeout: 60000
});

// request拦截器
service.interceptors.request.use(config => {
  // 是否需要设置 token
  const isToken = (config.headers || {}).isToken === false;
  if (getToken() && !isToken) {
    config.headers['Authorization'] = 'Bearer ' + getToken(); // 让每个请求携带自定义token 请根据实际情况自行修改
  }
  // get请求映射params参数
  if (config.method === 'get' && config.params) {
    let url = config.url + '?';
    for (const propName of Object.keys(config.params)) {
      const value = config.params[propName];
      var part = encodeURIComponent(propName) + "=";
      if (value !== null && typeof (value) !== "undefined") {
        if (typeof value === 'object') {
          for (const key of Object.keys(value)) {
            let params = propName + '[' + key + ']';
            var subPart = encodeURIComponent(params) + "=";
            url += subPart + encodeURIComponent(value[key]) + "&";
          }
        } else {
          url += part + encodeURIComponent(value) + "&";
        }
      }
    }
    url = url.slice(0, -1);
    config.params = {};
    config.url = url;
  }
  return config;
}, error => {
  console.error(error.config.url, error);
  return Promise.reject(error);
});

// 响应拦截器
service.interceptors.response.use(res => {
  // 未设置状态码则默认成功状态
  const code = res.data.code || 200;
  // 获取错误信息
  const msg = errorCode[code] || res.data.msg || errorCode['default'];

  if (code === 200) {
    return res.data.data;
  }

  // 错误情况处理
  let err;
  switch (code) {
    // 登录超时
    case 401:
      if (!isRelogin.show) {
        isRelogin.show = true;
        MessageBox({
          type: "error",
          message: "登录状态已过期，请重新登录"
        }).then(() => {
          isRelogin.show = false;
          store.dispatch('LogOut').then(() => {
            window.location.href = '/login';
          });
        }).catch(() => {
          isRelogin.show = false;
        });
      }
      err = new Error(msg);
      break;
    // 扫码登录
    case 5000:
      Notification.error({
        title: msg
      });
      err = {msg, loginManner: '1'};
      break;
    // 自定义错误
    case 6000:
      /*Message({
        message: msg,
        type: 'error'
      });*/
      MessageBox({
        title: "提示",
        type: "error",
        message: msg
      }).then(r => {});
      err = new Error(msg);
      break;
    // 系统错误
    case 500:
      if (process.env.NODE_ENV === 'development') {
        Message({
          message: msg,
          type: 'error'
        });
      }
      err = new Error(msg);
      break;
    // 其他异常
    default:
      Notification.error({
        title: msg
      });
      err = new Error(msg);
      break;
  }
  console.error(res.config.url, err);
  return Promise.reject(err);
}, error => {
  let {message} = error;
  if (message === "Network Error") {
    message = "后端接口连接异常";
  } else if (message.includes("timeout")) {
    message = "系统接口请求超时";
  } else if (message.includes("Request failed with status code")) {
    message = "系统接口" + message.substr(message.length - 3) + "异常";
  }

  if (process.env.NODE_ENV === 'development') {
    Message({
      message: message,
      type: 'error',
      duration: 5 * 1000
    });
  }

  console.error(error.config.url, message);
  return Promise.reject(error);
});

export default service;
